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Effects of impregnation solvent on Co/SiO2 catalyst for Fischer-Tropsch synthesis: A highly active and stable catalyst with bimodal sized cobalt particles

Paper ID Volume ID Publish Year Pages File Format Full-Text
43728 45985 2007 7 PDF Available
Title
Effects of impregnation solvent on Co/SiO2 catalyst for Fischer-Tropsch synthesis: A highly active and stable catalyst with bimodal sized cobalt particles
Abstract

Silica-supported cobalt (20 wt%) catalysts were prepared by incipient-wetness impregnation of silica with different cobalt nitrate solutions. The catalyst prepared from dehydration ethanol solution exhibited stable and the highest activity, as well as significantly low methane selectivity. Cobalt crystalline size of the catalyst prepared from dehydrated ethanol was smaller than that of the catalyst prepared from aqueous solution, and existed two different size where the large particles showed low bulk density with cluster-like structure. But only larger clusters existed in the catalyst prepared from aqueous solution. The increased amount of active sites and more reactive adsorbed CO on the surface determined the highest activity of the catalyst prepared from dehydrated ethanol solution in liquid-phase Fischer-Tropsch synthesis (FTS) reaction.

Graphical abstractThe catalyst prepared from dehydrated ethanol exhibited stable and the highest activity than the catalysts prepared from any other cobalt nitrate solution. It is considered that different structure properties of metallic cobalt, loosely constructed form clusters, in CoE catalyst, contributed to formation of more reactive adsorbed CO, and determining the highest catalytic activity in FTS reaction. Figure optionsDownload full-size imageDownload as PowerPoint slide

Keywords
Fischer-Tropsch synthesis; Co/SiO2 catalyst; Ethanol solvent; Preparation method; Syngas
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Effects of impregnation solvent on Co/SiO2 catalyst for Fischer-Tropsch synthesis: A highly active and stable catalyst with bimodal sized cobalt particles
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Publisher
Database: Elsevier - ScienceDirect
Journal: Applied Catalysis A: General - Volume 321, Issue 1, 29 March 2007, Pages 79–85
Authors
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Subjects
Physical Sciences and Engineering Chemical Engineering Catalysis
Get Full-Text Now
Don't Miss Today's Special Offer
Price was $35.95
You save - $31
Price after discount Only $4.95
100% Money Back Guarantee
Full-text PDF Download
Online Support
Any Questions? feel free to contact us